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Finding the Fourth Proportional to 145,343.62, 200,672.05 and 129,982.44

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Solution

The fourth proportional to 145,343.62, 200,672.05 and 129,982.44 is: 179,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,343.62 : 200,672.05 = 129,982.44 : x
  2. Step 2: Convert to fraction form
    145,343.62/200,672.05 = 129,982.44/x
  3. Step 3: Cross multiply
    145,343.62x = 200,672.05 × 129,982.44
  4. Step 4: Simplify right side
    145,343.62x = 26,083,842,373.85
  5. Step 5: Solve for x
    x = 26,083,842,373.85/145,343.62
  6. Step 6: Final answer
    x = 179,463.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.